結果
| 問題 |
No.1427 Simplified Tetris
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-03-12 22:02:07 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 310 ms / 2,000 ms |
| コード長 | 3,922 bytes |
| コンパイル時間 | 842 ms |
| コンパイル使用メモリ | 123,436 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-06-22 11:02:18 |
| 合計ジャッジ時間 | 3,675 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 37 |
ソースコード
import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons;
import core.bitop;
class EOFException : Throwable { this() { super("EOF"); } }
string[] tokens;
string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; }
int readInt() { return readToken.to!int; }
long readLong() { return readToken.to!long; }
real readReal() { return readToken.to!real; }
bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } }
bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } }
int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; }
int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); }
int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); }
class BMatch {
int n;
int[][] g;
int[] to;
bool[] vis;
this(int n) {
this.n = n; g = new int[][n]; to = new int[n]; vis = new bool[n];
}
void addEdge(int u, int v) {
g[u] ~= v; g[v] ~= u;
}
bool augment(int u) {
foreach (v; g[u]) if (!vis[v]) {
vis[v] = true;
if (to[v] == -1 || augment(to[v])) {
to[u] = v; to[v] = u; return true;
}
}
return false;
}
int solve() {
int ret;
to[] = -1;
foreach (u; 0 .. n) if (to[u] == -1) {
vis[] = false;
if (augment(u)) ++ret;
}
return ret;
}
}
int H, W;
string[] S;
bool solve() {
int mx0 = -1, mn1 = H;
foreach (x; 0 .. H) {
const cnt = S[x].count('#');
if (cnt == 0) {
chmax(mx0, x);
} else if (cnt < W) {
chmin(mn1, x);
} else {
return false;
}
}
if (!(mx0 < mn1)) {
return false;
}
foreach (p; 0 .. 1 << H) {
if (popcnt(p) == H - mn1) {
const sup = ((1 << H) - 1) ^ p;
for (int q = sup; ; --q &= sup) {
auto board = new char[][](H, W);
int pos = mn1;
foreach (x; 0 .. H) {
if (p & 1 << x) {
board[x][] = S[pos++][];
} else if (q & 1 << x) {
board[x][] = '#';
} else {
board[x][] = '.';
}
}
auto bm = new BMatch(H * W);
int cnt;
foreach (x; 0 .. H) foreach (y; 0 .. W) {
if (board[x][y] == '#') {
++cnt;
if (x > 0 && board[x - 1][y] == '#') {
bm.addEdge((x - 1) * W + y, x * W + y);
}
if (y > 0 && board[x][y - 1] == '#') {
bm.addEdge(x * W + (y - 1), x * W + y);
}
}
}
const res = bm.solve;
if (cnt == 2 * res) {
auto ans = new char[][](H, W);
foreach (x; 0 .. H) {
ans[x][] = '.';
}
int id;
foreach (x; 0 .. H) foreach (y; 0 .. W) {
if (board[x][y] == '#') {
if (ans[x][y] == '.') {
const v = bm.to[x * W + y];
ans[x][y] = ans[v / W][v % W] = cast(char)((id < 26) ? ('A' + id) : ('a' + (id - 26)));
++id;
}
}
}
writeln("Yes");
foreach (x; 0 .. H) {
writeln(ans[x]);
}
return true;
}
if (!q) break;
}
}
}
return false;
}
void main() {
try {
for (; ; ) {
H = readInt();
W = readInt();
S = new string[H];
foreach (x; 0 .. H) {
S[x] = readToken();
}
const res = solve();
if (!res) {
writeln("No");
}
}
} catch (EOFException e) {
}
}